Journal: Social history of Unix?

I wonder if there is anywhere a social history of the Unix operating system, a site or book that follows the communities influence of the OS. History tells us Kernighan and Ritchie wrote Unix at Bell labs, but it was the community of Unix users at Berkley that seems to have been the original "heart" of Unix. As far as I can piece together (Iwas born in 1976, and didn't join the internet and the computer community until university and the internet in 1994) Berkley and Bell / AT&T started fighting over who owned what, leading to the "Free" unixes. Not "Free" as in beer, or "free" as in speech, but "free of AT&T code". Programs such as Minix, Linux and finally BSDLite and 386BSD (the bases for the BSD family of operating systems.

What I am interested in is what societal influences lead to raise of Unix?

Unix shipping with complete source code, rather important as it allowed people to modify it to begin with.

Berkley making changes / additions to Unix and distributing them around Uni's and research institutes, improves the use of the OS and increases its use, to the point it becomes one of the main OSes used in reseach.

the rise of interconnected computers, email, ftp, etc that all allows the easy sharing of code and the networking of people from different Unis, different cities and eventually different countries

Tanenbaum's wish for Minix to remain small and well documented so that it could be used to teach which leads Linus to write his own kernel that supported all the features he wished to have, and again releasing the code